Abstract:
A feed-forward bias circuit biases body bias terminals of transistors of another circuit to compensate for PVT variations in the other circuit.In some aspects,the feed- forward bias circuit compensates for transistor process corners in a circuit by enabling the generation of different bias signals under different corner conditions.In some implementations,the feed-forward bias circuit is used to bias a delay circuit so that the delay circuit exhibits relatively constant delay characteristics over different PVT conditions.
Abstract:
A method and apparatus for mitigating dynamic overvoltage (DOV) in an AC network. A distribution and power transformer has its primary connected to the high voltage bus of the network and its secondary connected to a switching device. Upon the occurrence of a condition known to cause a DOV and the DOV a control system cause the switching device to change from a nonconductive mode to a conductive mode in less than the time for one cycle of the operating frequency of the AC network. This change in switching device conduction places a short circuit across the transformer secondary.
Abstract:
A controllable dimmer/relay used in combination with a power cycle control lighting device, wherein the controllable dimmer/relay serves as a network interface for the power cycle control lighting device. The controllable dimmer/relay is controlled by lighting commands formatted according to any of a variety of communications protocols, which instruct the controllable dimmer/relay to output one or more power cycles (interruptions in power) rather than gradual increases or decreases in power. In response to the power cycle(s) output by the controllable dimmer/relay, the power cycle control lighting device alters some aspect of the generated light (e.g., change one or more of color, color temperature, overall brightness, dynamic effect, etc.). In this manner, a power cycle control lighting device may be made responsive, via the controllable dimmer/relay, to lighting control commands formatted according to any of a variety of industry standard (e.g., DMX, Ethernet, DALI, X10) or proprietary protocols.
Abstract:
A method and apparatus for monitoring operational parameters in an IoT device is provided. An exemplary method includes performing a statistical analysis of a system metric. A determination is made as to whether an alert limit has been breached. If so, a message is constructed and dispatched to a server.
Abstract:
Apparatus and methods in accordance with this invention provide a multi-cell power supply for receiving power from a source and delivering power at an output terminal to a load. The multi-cell power supply includes a first power cell coupled to the source, and a first current sensor circuit. The first power cell provides a first output current, and includes a first output terminal coupled to a reference node of the multi-cell power supply, and a second output terminal coupled to the output terminal. The first current sensor circuit includes a first current sensor and a power supply. The first current sensor is coupled to the first output terminal of the first power cell, and measures the first output current. The power supply is coupled to either the reference node or a floating ground node of the first power cell, and provides power to the first current sensor.
Abstract:
Es wird ein Verfahren zur Steuerung des Energieverbrauchs elektrischer und/oder elektronischer Komponenten vorgeschlagen, wobei ein erstes Signal von einer mikromechanischen Sensoreinheit in Abhängigkeit einer Beschleunigung der Sensoreinheit erzeugt wird und in Abhängigkeit des ersten Signals eine Änderung des Energieverbrauchs der elektrischen und/oder elektronischen Komponente eingeleitet wird.
Abstract:
Techniques for a configurable, hardware-implemented, inverter controller are provided. In an example, a power inverter control circuit can include a configurable, hardware-implemented control loop circuit, an application interface and a configuration register. The hardware-implemented nature of the inverter controller can allow for more interface flexibility, more tightly coupled feedback, and high bandwidth while allowing ancillary processors to extract status and diagnostic information without burdening the inverter switch timing control or the acquisition of raw feedback information.
Abstract:
Le régulateur de tension (43) selon l'invention, pour un alternateur (44) de véhicule automobile, est du type de ceux comprenant un module de régulation (1) apte à contrôler un courant d'excitation (lexc) dans un enroulement d'excitation (3) de l'alternateur (44), en fonction d'une différence (5) entre une tension de consigne (U0) et une tension de régulation (Ubat) d'un réseau de bord (9). Le réseau de bord (9) du véhicule est alimenté par une batterie (10) à laquelle est raccordé l'alternateur (44). Conformément à l'invention, le régulateur de tension (43) comprend en outre un module de sécurité (30) réalisant une fonction de surveillance de la tension de régulation (Ubat) distinct du module de régulation (1). Selon une forme de réalisation particulière, le module de régulation (1 ) et le module de sécurité (30) sont reliés électriquement par des interconnections externes de type "bonding".